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Answer : The number of moles of produced will be, 0.241 moles.
Solution : Given,
Mass of Fe = 27.0 g
Molar mass of = 56 g/mole
First we have to calculate the moles of .
Now we have to calculate the moles of
The balanced chemical reaction is,
From the reaction, we conclude that
As, 4 mole of react to give 2 mole of
So, 0.482 moles of react to give moles of
Thus, the number of moles of produced will be, 0.241 moles.
Mole =mass ÷ Mr
∴mass = mole×Mr =0.10 × (23+35.5) = 5.85
the answer is D...
The Mr is obtained from the periodic table
Answer:
There are 12 sigma bonds and 3 pi bonds in benzene
Explanation:
- Molecular formula of benzene is .
- Here six carbon atoms are joined together through alternative single and double bond forming a six membered cyclic ring.
- Six hydrogen atoms are attached to six carbon atoms through a single bond.
- A single bond represents a sigma bond. A double bond consists of a sigma bond and a pi bond.
- In the Lewis structure of benzene, there are three C-C single bonds, three C=C double bonds and six C-H single bond.
- Hence there are 12 sigma bonds and 3 pi bonds in benzene
- Lewis structure of benzene is given below
Answer:
four covalent bonds
Explanation:
A carbon atom would form 4 covalent bonds.
For a covalent bond to be formed, an atom would share its valence electrons with another. In this process, each atom would require unpaired electrons for this bond to be formed. The number of available unpaired electrons would represent the number of electrons needed to complete the outer energy level of the atom.
In a carbon atom, we have no lone pair of electrons and 4 unpaired electrons. When these 4 electrons are shared with those of other atoms, they produce a complete octet which perfectly mimics the noble gases.